화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.104, 146-154, December, 2021
DOI10.1016/j.jiec.2021.08.018  Export Citation
An effective route for growth of WO3/BiVO4 heterojunction thin films with enhanced photoelectrochemical performance
Chunyun Hou, Jiangwei Yu, Jinrui Ding†, Weiqiang Fan, Hongye Bai, Dongbo Xu, and Weidong Shi†
  • School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
E-mail:,
The unsatisfactory solar light absorption of WO3 and poor charge separation of BiVO4 are main limits for their use in photoelectrochemical (PEC) water oxidation. Coupling WO3 with BiVO4 has been considered as a feasible way to improve PEC performance by taking complementary advantages of them. In this work, we obtained nanoflake-structured WO3 by hydrothermal growth with post-annealing. The effect of process variables on morphology and resultant performance were investigated. Electrodeposition growth was utilized to deposit BiVO4 onto WO3 forming WO3/BiVO4 heterojunction thin films. Porous BiVO4 with wormlike morphology was tightly coupled and well-distributed onto WO3 nanoflakes. The optimized best-performing WO3/BiVO4 photoanode exhibits higher photocurrent density than that summation of bare WO3 and BiVO4 over entire range of applied potential. This enhancement is mainly attributed to the effective charge separation at WO3/BiVO4 interface, which is confirmed through electrochemical impedance spectra (EIS) measurements, respectively. Our work provides a referable approach for the growth of WO3/BiVO4 heterojunction photoanode with enhanced PEC performance.
Keywords:WO3/BiVO4 heterojunction;Nanostructured films;Photoelectrochemical water oxidation
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